Seismic Interactions among Multiple Structures Founded on Liquefiable Soils in a City Block
Journal
Journal of Geotechnical and Geoenvironmental Engineering
Journal Volume
149
Journal Issue
9
Start Page
4023077
ISSN
10900241
Date Issued
2023
Author(s)
Dashti, Shideh
Abstract
Buildings are often located in close proximity to each other in urban settings. Seismic structure-soil-structure interaction near two adjacent buildings (SSSI2) on liquefiable soils has previously been investigated and shown to be consequential. However, these studies did not evaluate the impact of multiple SSSI3+ (exceeding three buildings in a cluster) on key engineering demand parameters (EDPs). In this paper, we systematically explore the influence of SSSI3+, building spacing (S) in relation to width (W), arrangement, and location in a larger cluster on building EDPs. SSSI3+ is shown to reduce the foundation's average settlement compared to an isolated structure (SSI) or even two adjacent structures (SSSI2). Similar to SSSI2, however, SSSI3+ notably amplifies the permanent rotation of side or corner structures compared to an isolated counterpart or the neighboring center structure(s). The resultant tilt magnitude of corner structures experiencing SSSI3+ is greater than those under SSSI2 at S/W<0.3, while a slight reduction is observed for SSSI3+ at greater spacings (0.3
Subjects
Centrifuge modeling
Cluster coupling
Finite-element analysis
Liquefaction
Numerical modeling
Seismic coupling
Soil-structure interaction (SSI)
Structure-soil-structure interaction (SSSI)
Urban liquefaction
Publisher
American Society of Civil Engineers (ASCE)
Description
論文編號: 4023077
Type
journal article